Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
Advanced Micro Devices
AMD
|
+$17.7M |
| 2 |
iShares MSCI EAFE ETF
EFA
|
+$10.1M |
| 3 |
NIO
NIO
|
+$7.66M |
| 4 |
Alibaba
BABA
|
+$7.54M |
| 5 |
Micron Technology
MU
|
+$6.73M |
Top Sells
| 1 |
NVIDIA
NVDA
|
+$101M |
| 2 |
SPDR Gold Trust
GLD
|
+$15.2M |
| 3 |
Amazon
AMZN
|
+$9.5M |
| 4 |
SPDR S&P 500 ETF Trust
SPY
|
+$8.76M |
| 5 |
Technology Select Sector SPDR Fund
XLK
|
+$7.41M |
Sector Composition
| 1 | Technology | 18.66% |
| 2 | Consumer Discretionary | 14.99% |
| 3 | Communication Services | 10.06% |
| 4 | Healthcare | 9.68% |
| 5 | Financials | 9.59% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
876
Floor & Decor
FND
$9.45B
| $468K | ﹤0.01% |
4,432
-664
| -13% | -$70.1K |
|
877
Herc Holdings
HRI
$4.59B
| $468K | ﹤0.01% |
4,138
| – | – |
|
878
Moody's
MCO
$91B
| $468K | ﹤0.01% |
1,283
| – | – |
|
879
UBS Group
UBS
$127B
| $468K | ﹤0.01% |
30,264
| – | – |
|
|
TXNM
880
TXNM Energy, Inc.
TXNM
$5.98B
| $467K | ﹤0.01% |
9,577
| – | – |
|
881
Banco Bradesco
BBD
$33.1B
| $466K | ﹤0.01% |
102,622
+440
| +0.4% | +$2K |
|
882
Elevance Health
ELV
$69.4B
| $465K | ﹤0.01% |
1,214
-1,786
| -60% | -$684K |
|
883
Allegiant Air
ALGT
$1.15B
| $464K | ﹤0.01% |
2,350
+900
| +62% | +$178K |
|
884
Leggett & Platt
LEG
$1.38B
| $463K | ﹤0.01% |
8,958
-101
| -1% | -$5.22K |
|
|
ME
885
DELISTED
23andMe Holding Co. Class A Common Stock
ME
| $463K | ﹤0.01% |
2,108
+148
| +8% | +$32.5K |
|
886
Robert Half
RHI
$3.66B
| $460K | ﹤0.01% |
5,152
| – | – |
|
|
LEV
887
DELISTED
The Lion Electric Company
LEV
| $457K | ﹤0.01% |
23,371
-1,389
| -6% | -$27.2K |
|
888
Cohu
COHU
$959M
| $456K | ﹤0.01% |
12,615
+1,009
| +9% | +$36.5K |
|
|
ZH
889
Zhihu
ZH
$441M
| $456K | ﹤0.01% |
6,047
-95
| -2% | -$7.16K |
|
890
Eterna Therapeutics
ERNA
$9.67M
| $454K | ﹤0.01% |
89
| – | – |
|
891
CEL-SCI Corp
CVM
$71.2M
| $453K | ﹤0.01% |
1,748
-517
| -23% | -$134K |
|
892
ProShares UltraPro QQQ
TQQQ
$27.1B
| $451K | ﹤0.01% |
+7,372
| New | +$451K |
|
893
Arvinas
ARVN
$583M
| $450K | ﹤0.01% |
5,549
-800
| -13% | -$64.9K |
|
894
CubeSmart
CUBE
$9.38B
| $450K | ﹤0.01% |
9,724
-1,001
| -9% | -$46.3K |
|
895
Huntington Ingalls Industries
HII
$10.6B
| $449K | ﹤0.01% |
2,118
| – | – |
|
896
Vipshop
VIPS
$8.72B
| $449K | ﹤0.01% |
23,581
-105,540
| -82% | -$2.01M |
|
897
Catalyst Pharmaceutical
CPRX
$2.45B
| $448K | ﹤0.01% |
77,400
-400
| -0.5% | -$2.32K |
|
898
Verra Mobility
VRRM
$3.9B
| $448K | ﹤0.01% |
29,066
+936
| +3% | +$14.4K |
|
899
Ocular Therapeutix
OCUL
$2.22B
| $444K | ﹤0.01% |
31,006
+2,705
| +10% | +$38.7K |
|
900
Aemetis
AMTX
$143M
| $443K | ﹤0.01% |
39,610
+4,968
| +14% | +$55.6K |
|